CO2 Inflator Kits, Presta and Schrader Valve Compatible, CO2 Bike Tire Pump for Mountain and Road Bicycles

I've used this several times and it does do the job with little effort. Attaches to the valve stem with no problem. Be aware that the release valve is a little sticky so ease it open. Btw, a single CO2 cartridge gave me one fill for a 26.5" x 2.10 bike tire. Price was not too bad either. I carry the tap and 2 cartridges in my tool pouch on my bike just in case.

Make sure the bar is in the vertical position before screwing in the cartridge. Screw the other end onto the tire valve and gently rotate the bar to inflate the tire. There is no leakage. The red piece is just foam to insert the cartridge but it isn't necessary and didn't fit my cartridges anyway. It's there just because the cartridges can get cold when releasing gas (thanks to the Bernoulli principle).

Works great, great price, buy it.

I like it's design, haven't used it yet.

I used the valve 2 times inflating tires. On the 3rd try it failed. Air flows out of the control handle and I drained 2 CO2 containers trying to get it to work.It shouldn't break after 2 uses!

At first I was skeptical to buy this gadget. Then when I got it and used it for the first time I was very impressed. Good construction and relatively easy to use, I’m an avid cyclist and I know that when you’re out on road your tires depend on a good piece device to quickly air them and continue. Overall.. excellent product!!

Very compact, works as it should.

Affordable, easy to use, small- essential bike trail maintenance tool

Wish it would have said no co2